Multilayer coextruding pyrocondensation film
A heat-shrinkable film, multi-layer co-extrusion technology, used in layered products, synthetic resin layered products, grafted polymer adhesives, etc., can solve the problem of low shrinkage and poor barrier properties of multi-layer co-extrusion heat-shrinkable bags and other problems, to achieve the effect of good anti-pollution heat sealing, good transparency and good gas barrier properties
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0023] The raw materials of each layer are added to the extruder of each layer to melt and plasticize, and then enter a multi-layer co-extrusion circular die to distribute the melt to form a multi-layer circular melt tube; The body tube blank is cooled and formed by vacuum sizing, and then enters the hot water tank to be heated to a suitable blowing temperature, and the compressed air is filled between two pairs of nip rollers for horizontal blowing and longitudinal stretching; the formed original film is heat treated Finally, it is rolled up, and then irradiated to a certain dose before bagging.
[0024] Example 2:
Embodiment 2
[0026] Other methods and structures are the same as in Embodiment 1.
[0027] Example 3:
Embodiment 3
[0029] Other methods and structures are the same as in Embodiment 1.
[0030]After testing, the main performance indicators of the multi-layer co-extruded heat shrinkable film obtained by adopting the technical solution of the present invention are shown in Table 1.
[0031] Table 1
[0032] Test items
Example 1
Example 2
Example 3
Longitudinal and transverse tensile strength
56MPa
58MPa
50MPa
Longitudinal and transverse elongation at break
110%
115%
113%
Seal strength
15N / 15mm
17N / 15mm
16N / 15mm
[0033] The invention creates a multi-layer heat shrinkable film, which overcomes the disadvantages of general polyamide multi-layer co-extrusion heat shrinkable film, such as low shrinkage rate, poor barrier property, and brittleness at low temperature, and has many unique properties, such as excellent heat sealing Performance: good anti-pollution heat sealing performance, stable heat sealing st...
PUM
Property | Measurement | Unit |
---|---|---|
density | aaaaa | aaaaa |
density | aaaaa | aaaaa |
thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com