Supercharge Your Innovation With Domain-Expert AI Agents!

Package and film

A packaging and film technology, applied in packaging, wrapping paper, packaged food, etc., can solve problems such as not being able to expand freely

Active Publication Date: 2020-05-15
DAIWA CAN
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The internal pressure of the package rises due to heating by a microwave oven, and the sealant film of the release agent-coated portion below the cut line of the stretch film freely expands relative to the cut line, but the release agent-uncoated portion cannot freely expand.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Package and film
  • Package and film
  • Package and film

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0031] use Figure 1 to Figure 3 The package 1 using the film 11 according to the first embodiment of the present invention will be described.

[0032] figure 1 It is a perspective view showing the structure of the package 1 according to the first embodiment of the present invention, figure 2 It is a cross-sectional view schematically showing the layer structure of the film 11 used in the package 1 . image 3 It is a perspective view showing a state heated by a microwave oven as an example of using the package body 1 .

[0033] Such as figure 1 As shown, the packaging body 1 is a packaging container for microwave oven heating formed by forming a film 11 having a multilayer structure having a crystalline stretched oriented film 21 on the outer surface side into a bag shape. The package 1 is, for example, a pillow bag configured by accommodating contents in a bag-shaped film 11 and sealing an end portion with a sealing portion 12 .

[0034] As a specific example, the packa...

Embodiment 1

[0069] As Example 1, the following structures were used for the package 1 and the film 11 . As the crystalline stretched oriented film 21, a biaxially stretched PET film (Toyobo Co., Ltd.: E5100) with a thickness of 12 μm was used. In addition, as the sealant film 23 , an LLDPE film (Toyobo Co., Ltd.: L4102) having a thickness of 40 μm was used. As the adhesive layer 22, a polyurethane-based dry lamination adhesive was used, and the crystalline stretched oriented film 21 and the sealant film 23 were bonded together, and aged in a constant temperature bath at 38°C for 3 days to produce up figure 1 Film 11 is shown.

[0070] The position near the center of the upper surface side of the packaging body 1 of the crystalline stretched oriented film 21 of the film 11 was heated by a carbon dioxide laser, as Figure 4 A pair of non-oriented portions 21a are formed as shown. In addition, the non-orientation part 21a is made into a long rectangular shape in one direction, and the le...

Embodiment 2

[0073] The packaging body 1 and the film 11 of Example 2 have the following structures. The materials of the crystalline stretched oriented film 21, the adhesive layer 22, and the sealant film 23, the shape of the non-oriented portion 21a, and the shape of the package 1 were the same as in Example 1, but the pair of non-oriented portions 21a The distance between the opposing short sides (approach pitch) was set to 1 mm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

A package (1) is provided with a film (11) including a crystalline oriented stretch film; and a breakable section (13) provided on the film (11) and having non-oriented parts (21a), wherein the non-oriented parts (21a) are arranged so as to face each other across an oriented part (21b) of the crystalline oriented stretch film (21), and is formed by heating a portion of the crystalline oriented stretch film (21) to a temperature equal to or higher than the melting point of the crystalline oriented stretch film (21).

Description

technical field [0001] The present invention relates to a package and a film for accommodating contents heated by a microwave oven. Background technique [0002] There is known a package in which the content is heated in a microwave oven in a sealed state in which the content is accommodated. However, in such a package, if the contents are heated in a microwave oven, the internal pressure will increase. Therefore, there is also known a package that is provided with a mechanism that automatically discharges steam in the package to lower the internal pressure of the package during heating in a microwave oven. [0003] For example, Japanese Patent No. 3942709 discloses a package in which a through-hole is provided in a film having a laminated structure of a base film and a first sealant layer, and a coating line is further squeezed on the side of the first sealant layer. Shaped low-density polyethylene and the like are provided with a second sealant layer. When the package i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B65D81/34B65D65/40
CPCB65D65/40B65D2205/00B65D75/58B65D77/2032B65D51/1638B65D81/3446C08J5/18C08J2367/02C08J2323/06C08J2323/12C08J2375/04B32B7/12B32B2250/24B32B2307/518B32B2255/26B32B27/40B32B2439/06B32B2255/10B32B2307/704B32B27/36B32B2307/7244B32B2307/514B32B2307/31B32B27/08B32B27/32B65D75/006B65D81/3461
Inventor 竹内裕二滑川裕子君塚崇兼平崇
Owner DAIWA CAN
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com