一种具有预断裂结构的杂粮真空包装袋

By setting pre-fracture grooves on the nylon layer and printing dark-colored stripes, the problem of difficult opening of existing packaging bags is solved, achieving a convenient opening effect.

CN224512021UActive Publication Date: 2026-07-17HARBIN PENGCHENG MEDICINAL PACKAGING NEW MATERIAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HARBIN PENGCHENG MEDICINAL PACKAGING NEW MATERIAL TECH
Filing Date
2025-07-23
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When existing packaging bags use a standard straight tear-off design, the bag needs to be held between the fingers to open it, resulting in a small contact area between the fingers and the bag, making it difficult to open.

Method used

Pre-fracture grooves are set in the nylon layer to form an embrittlement layer. A permeable embrittlement layer is formed on the nylon layer by laser etching, which reduces the flexibility of the nylon layer and increases its embrittlement. The pre-fracture grooves are set along the width direction of the bag body, and dark-colored stripes are printed at the grooves to determine the processing position.

Benefits of technology

The design of the brittle layer reduces the difficulty of opening the bag, allowing for a larger contact area between the palm and the bag. It is more convenient to pry the bag open with the palm along the pre-fracture groove, making opening simple.

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Abstract

一种具有预断裂结构的杂粮真空包装袋，涉及杂粮包装袋技术领域。为解决现有的包装袋采用普通直线撕口形式时，需要用手指夹住包装袋才能打开，手指与包装袋接触面积较小，存在不便于用力，导致开封困难的问题。本实用新型包括袋体，袋体包括依次设置的尼龙层、油墨层、胶黏剂层以及聚乙烯层，尼龙层中部具有两侧贯穿的预断裂槽，通过预断裂槽使得尼龙层的局部表面形成飞穿透性的脆化层，通过在尼龙层上设置预断裂槽，使得尼龙层的局部表面形成飞穿透性的脆化层，脆化层硬度高但柔韧性下降，降低袋体的打开难度，用手掌握住袋体沿着预断裂槽掰开即可，手掌与袋体接触面积更大，便于用力，袋体开封简单。
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Claims

1. A vacuum packaging bag for coarse grains having a pre-rupture structure, characterized by, include: The bag body includes a nylon layer (1), an ink layer (2), an adhesive layer (3), and a polyethylene layer (4) arranged sequentially. The nylon layer (1) has a pre-fracture groove (5) that runs through both sides in the middle, and the pre-fracture groove (5) causes a non-penetrating embrittlement layer to be formed on a local surface of the nylon layer (1).

2. The multi-grain vacuum packaging bag having a pre-rupture structure according to claim 1, wherein, The depth of the pre-fracture groove (5) is 50%-70% of the thickness of the nylon layer (1).

3. The multi-grain vacuum packaging bag having a pre-rupture structure according to claim 1, wherein, The pre-fracture groove (5) is provided along the width direction of the bag body.

4. The multi-grain vacuum packaging bag having a pre-rupture structure according to claim 1, wherein, The bag body is printed with a dark-colored stripe covering the pre-fracture groove (5), and the processing position of the pre-fracture groove (5) is determined by the dark-colored stripe.

5. The multi-grain vacuum packaging bag having a pre-rupture structure according to claim 4, wherein, The dark-colored bar is a blue bar.

6. The multi-grain vacuum packaging bag having a pre-rupture structure according to claim 4, wherein, The dark-colored bar is a purple bar.

7. The multi-grain vacuum packaging bag having a pre-rupture structure according to any one of claims 1-6, characterized in that, The nylon layer (1) is formed from a biaxially oriented nylon film.

8. The multi-grain vacuum packaging bag having a pre-rupture structure according to claim 7, wherein, The polyethylene layer (4) is formed from three co-extruded films.