Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Use of blank backing plate for preventing slobbering in mold slit coating

A mold and coating technology, applied in the slot coating mold, the salivation in the coating process of the slot mold, the adhesive composition, the blank backing plate in the field of preventing the fluid composition, can solve the problem of polluting the production line or finished products, Manufacturing process failures, time-consuming production lines and other issues, to achieve the effect of reducing maintenance costs

Pending Publication Date: 2022-07-08
BOSTIK INC
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The accumulated fluid material may then contaminate the production line or finished product, thus leading to defective products, time-consuming production lines, and even failure of the manufacturing process and loss of productivity
In order to overcome these problems, worn slot coating dies must be replaced with new ones, which greatly increases the overall production and maintenance costs

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
  • Use of blank backing plate for preventing slobbering in mold slit coating
  • Use of blank backing plate for preventing slobbering in mold slit coating
  • Use of blank backing plate for preventing slobbering in mold slit coating

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0141] In this example, at a temperature of 150°C and at a speed of 100-600 m / min, an ethylene vinyl acetate based adhesive was applied to a coating made of polypropylene or polypropylene and polyethylene terephthalate. on the surface of the nonwoven substrate.

[0142] Coating the substrate with the adhesive was first achieved by using a slot coating die without a blank backing plate and then by using a slot coating die according to the invention comprising a 0.25 mm thick blank backing plate. As shown in the table below, the adhesive was applied in different amounts (g adhesive / m 2 ) and different gun-like deflections are applied to the substrate.

[0143] In this example, adhesive build-up (drool) at the downstream die parts of the slot coating die was visually investigated.

[0144] test Amount (g / m 2 )

[0145] As shown in the table above, the presence of the blank backing plate according to the invention makes it possible to eliminate drooling of the adhe...

example 2

[0147] In this example, a styrene block copolymer based adhesive was coated on polypropylene or polypropylene and polyethylene terephthalate at a temperature of 150°C and at a speed of 100-600 m / min. on the surface of a nonwoven substrate made of ester.

[0148] Coating the substrate with the adhesive was first achieved by using a slot coating die without a blank backing plate and then by using a slot coating die according to the invention comprising a 0.25 mm thick blank backing plate. As shown in the table below, the adhesive was applied in different amounts (g adhesive / m 2 ) and different gun-like deflections are applied to the substrate.

[0149] During this example, build-up (drool) of adhesive at the downstream die parts of the slot coating die was visually investigated.

[0150]

[0151]

[0152] Also, as shown in the table above, the presence of a blank backing plate according to the invention makes it possible to eliminate drooling of the adhesive, regardless ...

example 3

[0154] In this example, the thickness of the blank backing plate was changed in order to study the effect of this change on the drooling phenomenon.

[0155] Therefore, at a temperature of 150° C. and at a speed of 100-600 m / min, the adhesive used in Example 1 was coated on a surface made of polypropylene or polypropylene and polyethylene terephthalate. substrate on the surface of the nonwoven substrate. Coating 10g / m on substrate 2 amount. The patterned backing used in this example had a thickness of 0.15 mm.

[0156] test Gun deflection (°) Thickness of blank backing plate (mm) result 1 87 0.15 No salivation 2 88 0.25 No salivation 3 86 0.4 No salivation

[0157] As shown in the table above, independent of the thickness of the blank backing plate, and also independent of the difference between the thickness of the patterned backing plate and the thickness of the blank backing plate, the presence of the blank backing plate accord...

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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a slit coating mold for applying a fluid composition to a substrate, comprising: an upstream mold part (5) having a lower edge (9); a downstream mold part (6) having a lower edge (12), the downstream mold part (6) facing and spaced apart from the upstream mold part (5), and the lower edge (9) of the upstream mold part (5) being vertically aligned with the lower edge (12) of the downstream mold part (6); a patterned backing plate (7) between the upstream mold part (5) and the downstream mold part (6), the patterned backing plate (7) having a lower edge (16b), where the lower edge (16d) comprises at least one cutout (17); and a blank backing plate (1) having a lower edge (2b), said lower edge (2b) being free of a cut-out, the blank backing plate (1) being located between the downstream mold part (6) and the patterned backing plate (7); wherein at least one of the upstream mold part (5) and the downstream mold part (6) comprises at least one fluid inlet (15) configured for flowing a fluid composition between the upstream mold part (5) and the downstream mold part (6), and the at least one cutout (17) configured for dispensing the fluid composition onto a substrate. The use of the blank backing plate (1) makes it possible to reduce or prevent salivation of the fluid composition.

Description

technical field [0001] The present invention relates to the use of a blank backing plate to prevent drooling of fluid compositions, especially adhesive compositions, during slot die coating. The present invention also relates to a slot coating die for applying a fluid composition, in particular an adhesive composition, to a substrate, comprising a blank backing plate. The present invention also relates to a method of applying a composition to a substrate by using the slot coating die. Background technique [0002] The coating process may involve applying a thin film of fluid material to a substrate such as, for example, paper, fabric, film, foil or sheet. In many cases, coatings are applied to improve the surface properties of the substrate, such as substrate appearance, adhesion, wetting, corrosion resistance, abrasion resistance, and scratch resistance. Coatings can also form a major part of the final product in a variety of situations including printing processes and se...

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): B05C5/02
CPCB05C5/0254B05D1/26
Inventor 张振军李文
Owner BOSTIK INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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