Language: English｜简体中文
Content prepared by: nanozeo.cn
First published: September 18, 2026
Updated: September 18, 2026
English
AI Summary
Nano ZEO® B3ab Water-Resistance Strengthening Additive is used with starch adhesive to help corrugated-board glue lines remain bonded when exposed to water. A practical factory acceptance method uses 5 cm × 5 cm control and treated specimens. After a thermometer confirms that the water is at 50°C, both specimens are fully immersed and observed for 15 minutes without continued heating. A treated glue line passes when it remains bonded throughout the test. The result must be judged according to the actual B3ab addition point because some plants may treat only the single facer or double backer. Room-temperature immersion for 24 hours may be used as an extended observation, but it does not replace the 50°C／15-minute quick acceptance test.
Background reading:
What Is Nano ZEO® Eco-friendly Powder?
How Is Nano ZEO® Added to Starch Glue?
Why Does Corrugated Board Need Water-Resistant Glue Lines?
Corrugated board is commonly bonded with starch adhesive. During rainy seasons, accidental rain exposure or high-humidity transport, water can weaken untreated glue lines and cause layers to separate. Once delamination begins, the board may lose structural stability and provide less protection to the packed goods.
Nano ZEO® B3ab is intended to help strengthen the water resistance of the bonding structure. It does not turn corrugated board into a permanently waterproof material. Its purpose is to help treated glue lines remain bonded under defined exposure and test conditions.
From our experience conducting demonstrations at factories and customer sites, the test is easy to prepare. Hot water from a dispenser or kettle can be mixed with room-temperature water, and a thermometer is used to confirm 50°C. No laboratory is required for this quick comparison. When untreated and B3ab-treated specimens are immersed together, customers can directly observe how the two glue-line structures respond to water.
If additional specimens are available, a second set may be immersed in room-temperature water and checked the following day. Seeing that the treated glue lines remain bonded after more than 24 hours helps customers understand the role of water-resistant treatment under those test conditions.
Figure 1. Illustrative reconstruction of a side-by-side immersion comparison. The untreated specimen separates in water while the B3ab-treated specimen remains bonded. The thermometer probe is placed in the test water.
1. What Is Nano ZEO® B3ab?
The commercial product is identified as ZEO® Water-Resistance Strengthening Additive, model ZEO-100-B3AB. In this article, the series is referred to as B3ab.
B3ab is added to starch adhesive and distributed along the corrugated-board bonding lines. During board bonding, heating and drying, it helps form a more water-resistant glue-line structure and reduces the risk of spontaneous delamination when the treated bond is exposed to water.
This article describes the mechanism only at the application level. Resin types, reaction details, proprietary formulation ratios and customer-specific settings remain controlled technical information.
2. Recommended Addition Range and Addition Points
A practical starting range is approximately 4–6% of the dry-starch weight. This is not a universal fixed dosage. The final addition level should be confirmed through recorded trials according to the plant's starch-adhesive recipe, equipment and production conditions.
B3ab may be introduced in several ways:
- Add it during starch-adhesive preparation and mix it in the preparation tank.
- Pre-disperse it after adhesive preparation, then add it to the plant circulation tank leading to the glue pan.
- Add it through the adhesive system serving the single facer or double backer, depending on the plant configuration.
In normal implementation, both the single-facer and double-backer glue systems are usually treated. The addition point must be recorded because it determines which glue lines should remain bonded during the immersion test.
3. What Is the 50°C／15-Minute Quick Acceptance Test?
The quick immersion test is a practical factory acceptance method for confirming whether the intended glue lines received the water-resistant treatment and remained bonded under the specified test conditions. It is not presented as a third-party laboratory certification or as proof that the complete package is waterproof under every use condition.
Internal factory acceptance records from 2019 used a 50°C water starting temperature and a 15-minute immersion period. In the comparison records, untreated specimens began to delaminate in water, while the intended treated glue lines remained bonded through the 15-minute test.
4. Prepare the Specimens and Equipment
Prepare the following:
- Corrugated-board specimens cut to 5 cm × 5 cm.
- At least one untreated control specimen and one B3ab-treated specimen produced with the same paper specification and comparable machine conditions.
- A water-resistant cup or container deep enough to keep both specimens below the water surface.
- Hot water and room-temperature water.
- A thermometer and timer.
- A camera or production record for documenting the test.
Specimens may be taken from the middle or surrounding area of the production board. If the glue rolls apply adhesive evenly, results from these locations should be consistent. In practice, two specimens are often cut from each board when material is available. This is a practical repeat-check arrangement, not a formal statistical sampling standard.
5. Run the Test
- Mark the untreated control and B3ab-treated specimens clearly. Record the paper combination, flute type, production batch and B3ab addition point.
- Mix hot water with room-temperature water in the test container.
- Use a thermometer to confirm that the water temperature is exactly 50°C before immersion.
- Fully immerse one untreated control specimen and one B3ab-treated specimen below the water surface at the same time.
- Start the 15-minute timer when both specimens are fully submerged.
- Do not continue heating or actively maintain the water at 50°C. The water may cool naturally during the test.
- Observe whether the paper layers or glue lines separate spontaneously. Do not pull, peel or apply force to the specimens.
- At 15 minutes, photograph and record the condition of each intended treated glue line.
- If a second control and treated pair is available, repeat the test to check whether the result is reproducible.
Figure 2. Nano ZEO® B3ab factory quick acceptance workflow. The 50°C value is the starting water temperature measured before immersion.
6. How Is Pass or Fail Determined?
The result must be evaluated against the recorded B3ab addition point.
Pass: The glue lines intended to receive B3ab remain bonded throughout the 15-minute immersion period, with no spontaneous glue-line separation or delamination.
Fail: Any glue line that was intended to receive B3ab separates spontaneously before the 15-minute endpoint.
No manual peeling force is needed. Untreated corrugated-board glue lines may visibly separate in the water, allowing a direct comparison with the treated specimen.
7. How Should Partial Treatment Be Interpreted?
Some plants may add B3ab only to the double-backer adhesive system and not to the single facer. In that situation, an untreated single-facer glue line may separate even when the double-backer treated glue line remains bonded.
This partial separation does not automatically mean that B3ab failed. Inspectors should first identify which glue lines were intended to receive B3ab and evaluate those lines separately. For normal implementation, both the single-facer and double-backer systems are usually treated. A comparison test can therefore help a customer confirm whether each required glue path was treated as specified.
8. Why Test the Control and Treated Specimens Together?
The simplest useful demonstration places one untreated control and one B3ab-treated specimen in the same container at the same time. This reduces differences in water temperature, timing and observation conditions and makes the glue-line response easier to compare.
If both board types have an additional specimen, repeat the test once. A repeat comparison provides more confidence that the observed result can be reproduced. For formal lot acceptance, the factory or customer should define a sampling plan appropriate to the production batch.
9. Room-Temperature／24-Hour Extended Observation
Room-temperature immersion for 24 hours or longer may be used as an extended observation. Fully immerse an additional control and treated pair in room-temperature water and inspect the glue lines the following day.
The extended observation supports communication such as “the treated package glue lines remain bonded after 24 hours of water exposure” only when the specimen, treated glue lines and test conditions match the recorded result. It does not replace the 50°C／15-minute factory quick acceptance method.
10. What Should Be Recorded?
Record at least the following:
- Product identification: Nano ZEO® B3ab／ZEO-100-B3AB.
- Production date, board specification, flute type and sample location.
- Dry-starch weight and B3ab addition percentage.
- Addition point: preparation tank, circulation tank, single facer, double backer or other defined location.
- Control and treated specimen identification.
- Starting water temperature of 50°C and immersion start time.
- Condition of each intended treated glue line at the 15-minute endpoint.
- Photographs before immersion, during the test and at the endpoint.
- Repeat-test result, if performed.
The immersion test confirms the behavior of the tested specimens under the recorded conditions. It does not by itself establish box compression, transport performance, food-contact compliance or complete-package performance. Those claims require separate validation.
11. Frequently Asked Questions
Does the water need to remain at 50°C for the full 15 minutes?
No. Confirm that the water is at 50°C immediately before immersion. After the specimens are submerged and timing begins, continued heating is not required and the water may cool naturally.
Must every glue line remain bonded?
Judge the glue lines that were intended to receive B3ab. If only the double-backer system was treated, separation at an untreated single-facer line should be recorded but does not by itself constitute B3ab failure. In normal implementation, both systems are usually treated.
Is 4–6% a guaranteed dosage for every plant?
No. It is a practical starting range based on dry-starch weight. Confirm the final dosage through a recorded plant trial.
Does passing the test mean that the corrugated board is waterproof?
No. Passing means that the intended treated glue lines remained bonded under the recorded immersion conditions. Use “water-resistant” rather than “waterproof,” and validate the complete package separately for its intended transport and storage environment.
Can the test be performed without a laboratory?
Yes. A cup or suitable container, thermometer, timer, water and properly identified specimens are sufficient for this quick factory comparison. Accurate preparation and complete records remain essential.
简体中文
内容整理：nanozeo.cn
首次发布：2026年9月18日
更新日期：2026年9月18日
AI摘要
纳米 ZEO® B3ab 抗水强化剂可配合淀粉胶使用，协助瓦楞纸板的粘合胶线在接触水后保持粘合。实务上的工厂快速验收方法，是将未添加与已添加 B3ab 的纸板分别裁成 5 cm × 5 cm 试片。先用温度计确认水温为 50°C，再将两片试片完全浸入水面下，在不持续加热的情况下观察 15 分钟。已处理的粘合胶线在测试期间保持粘合，即为达标。判读时必须对照 B3ab 的实际添加位置，因为部分工厂可能只在单面机或双面机添加。常温水浸泡 24 小时可作为延伸观察，但不能取代 50°C／15 分钟快速验收。
为什么瓦楞纸板需要强化粘合胶线的抗水性？
瓦楞纸板通常使用淀粉胶进行粘合。梅雨季、意外淋雨或高湿度运输环境，都可能使未经抗水强化的胶线遇水后失去粘合力，造成纸层分离。纸板一旦开胶，结构稳定性可能下降，对箱内货品的保护能力也会受到影响。
纳米 ZEO® B3ab 的用途，是协助强化纸板粘合结构的抗水性。它不会把瓦楞纸板变成永久防水材料，而是帮助经过处理的粘合胶线，在明确的接触水及测试条件下保持粘合。
根据我们在工厂及客户现场进行测试的经验，这项测试很容易准备。直接使用饮水机或热水壶的热水，与常温水调配后，以温度计确认水温为 50°C，即可进行快速比较，不需要进入实验室。将未添加与已添加 B3ab 的纸板试片同时浸入水中，客户便能当场观察两种粘合结构遇水后的差异。
如果还有多余试片，也可以另取一组放入常温水中，隔天再检查。超过 24 小时后，已处理的粘合胶线仍未分离，能帮助客户理解抗水处理在该测试条件下发挥的作用。
图 1. 一对一泡水比较的示意重现。未处理试片在水中分离，B3ab 处理试片保持粘合；温度计探头置于测试用水中。
一、什么是纳米 ZEO® B3ab？
本产品的正式品名为纳米石抗水强化剂，型号为 ZEO-100-B3AB。本文统一简称为 B3ab。
B3ab 加入淀粉胶后，会沿着瓦楞纸板的粘合胶线分布。纸板经过贴合、加热与干燥后，B3ab 可协助形成较耐水的粘合结构，降低已处理胶线遇水后自行开胶或分层的风险。
本文只从实际应用层面说明抗水机制。树脂种类、反应细节、专有配方比例及客户专属设定，仍属于受控技术资料，不在公开文章中披露。
二、建议添加量与添加位置
B3ab 的实务起始建议量，约为干淀粉重量的 4–6%。这不是适用于所有工厂的固定用量；最终添加量应根据工厂的淀粉胶配方、设备及生产条件，通过有记录的试产确认。
B3ab 可采用以下方式导入：
- 制糊时加入制糊桶，与淀粉胶一起混合。
- 制糊完成后，先将 B3ab 预先分散，再加入现场循环桶并送至糊盘。
- 依工厂设备配置，通过单面机或双面机的胶水系统添加。
正常导入时，通常会要求单面机与双面机胶水系统都添加 B3ab。添加位置必须留下记录，因为泡水测试时，应根据实际处理的胶线进行判定。
三、什么是 50°C／15 分钟快速验收？
快速泡水测试是一种工厂现场验收方法，用于确认预定粘合胶线是否完成抗水处理，并在指定测试条件下保持粘合。它不是第三方实验室认证，也不能证明整只包装在所有使用环境下都完全防水。
2019 年的工厂验收纪录采用 50°C 起始水温及 15 分钟浸泡时间。对照纪录中，未添加 B3ab 的试片会在水中开始分层；预定经过处理的粘合胶线，则在 15 分钟测试期间保持粘合。
四、准备试片与工具
请准备：
- 裁切为 5 cm × 5 cm 的瓦楞纸板试片。
- 至少一片未添加 B3ab 的对照样，以及一片已添加 B3ab 的试产样；两者应采用相同纸张规格及可比较的机台条件。
- 可让两片试片完全浸入水面下的耐热水杯或容器。
- 热水与常温水。
- 温度计与计时器。
- 相机或生产纪录表，用于记录测试过程。
试片可从生产纸板的中间或周围位置取样。若胶辊平均施胶量一致，不同位置的结果应具有一致性。材料充足时，实务上通常会从每种纸板裁切两片，供第二次复验使用。这是现场的实务安排，不是正式的统计抽样标准。
五、泡水测试步骤
- 清楚标示未添加的对照样与已添加 B3ab 的试产样，并记录纸张组合、楞型、生产批次及 B3ab 添加位置。
- 在测试容器中，以热水与常温水调配测试用水。
- 试片放入前，以温度计确认水温正好为 50°C。
- 将一片未添加的对照样与一片已添加 B3ab 的试产样，同时完全浸入水面下。
- 两片试片完全入水后，开始计时 15 分钟。
- 测试期间不持续加热，也不需要让水温一直维持在 50°C；水温可以自然下降。
- 观察纸层或粘合胶线是否在水中自行分离。不要用手拉开、剥离或对试片施力。
- 满 15 分钟时，拍照并记录各条预定处理胶线的状态。
- 如果另有一组对照样与试产样，可重复泡水一次，确认结果是否能够重现。
图 2. 纳米 ZEO® B3ab 工厂快速验收流程。50°C 是试片入水前量测的起始水温。
六、如何判定合格或不合格？
测试结果必须对照已记录的 B3ab 添加位置进行判断。
合格：预定添加 B3ab 的粘合胶线，在 15 分钟浸泡期间保持粘合，没有自行开胶或分层。
不合格：任何一条预定添加 B3ab 的胶线，在 15 分钟结束前自行分离或脱胶。
判定不需要用手施力剥离。未经处理的瓦楞纸板胶线可能直接在水中分离，因此可以与处理后的试片进行直接比较。
七、如何判读部分胶路处理？
部分工厂可能只在双面机胶水系统添加 B3ab，单面机则未添加。在这种情况下，即使双面机处理胶线保持粘合，未处理的单面机胶线仍可能分离。
这种部分分离不能直接判定 B3ab 失效。验收人员应先确认哪些胶线预定添加 B3ab，再分别判断。正常导入通常会要求单面机与双面机都添加，因此泡水对照也能帮助客户确认各条指定胶路是否依要求完成处理。
八、为什么要把对照样与试产样一起泡？
最简单而有效的做法，是把一片未添加的对照样与一片已添加 B3ab 的试产样，同时放入同一个容器中。这样可以减少水温、计时及观察条件的差异，也能更直接地比较两种胶线遇水后的反应。
如果两种纸板各有另一片试片，可以再重复测试一次。第二次对照能提高结果可重现的可信度。若用于正式批次验收，工厂或客户仍应根据生产批次制定适合的抽样计划。
九、常温水／24 小时延伸观察
常温水浸泡 24 小时或更长时间，可作为延伸观察。将另一组对照样与试产样完全浸入常温水中，隔天再检查各条粘合胶线。
只有当纸板结构、处理胶线与测试条件符合纪录时，才能依据结果说明「经过处理的包装粘合胶线，在泡水 24 小时后仍未开胶分离」。这项延伸观察不能取代 50°C／15 分钟工厂快速验收。
十、测试应记录哪些资料？
至少记录：
- 产品识别：纳米 ZEO® B3ab／ZEO-100-B3AB。
- 生产日期、纸板规格、楞型及取样位置。
- 干淀粉重量与 B3ab 添加比例。
- 添加位置：制糊桶、循环桶、单面机、双面机或其他明确位置。
- 对照样与试产样的识别方式。
- 50°C 起始水温及入水时间。
- 满 15 分钟时，各条预定处理胶线的状态。
- 入水前、测试过程及结束时的照片。
- 如有进行第二次泡水，记录复验结果。
泡水测试只能确认试片在纪录条件下的表现，不能单独证明纸箱抗压、运输表现、食品接触合规或完整包装性能。相关声明仍需另行验证。
十一、常见问题
15 分钟内是否需要一直维持 50°C？
不需要。试片放入前，先确认水温为 50°C；试片完全入水并开始计时后，不需要持续加热，水温可以自然下降。
是否所有胶线都必须保持粘合？
应判断预定添加 B3ab 的胶线。如果只在双面机添加，未处理的单面机胶线分离应留下纪录，但不能单独据此判定 B3ab 失效。正常导入通常会要求两个系统都添加。
4–6% 是否适用于所有工厂？
不是。4–6% 是以干淀粉重量为基准的实务起始建议范围，最终用量仍应通过有记录的工厂试产确认。
通过泡水测试是否代表纸板完全防水？
不是。通过测试代表预定处理胶线在已记录的泡水条件下保持粘合。对外应使用「抗水」而不是「完全防水」，完整包装仍需根据实际运输及储存环境另行验证。
不进入实验室也能进行测试吗？
可以。准备合适的水杯或容器、温度计、计时器、水及标示清楚的纸板试片，即可进行工厂快速对照。准确准备及完整纪录仍然重要。
