Method of manufacturing vacuum insulation using glass fibers

Patent metadata

Field	Value
Publication number	US-9829146-B2
Application number	US-201314390591-A
Country	US
Kind code	B2
Filing date	Apr 9, 2013
Priority date	Apr 10, 2012
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

The present invention relates to an insulation used in home appliances and building materials. A method of manufacturing an insulation includes fabricating an adhesive solution by inputting a binder to water contained in a water tank, inputting long glass fibers to the adhesive solution, removing moisture by supplying the long glass fibers to a mesh belt, wherein the mesh belt move left and right and front and rear so that the long glass fibers are uniformly spread, fabricating glass fiber paper by drying the long glass fibers, winding the glass fiber paper in a roll form, and preparing the glass fiber paper rolls in multiple layers, stacking two or more sheets of the glass fiber paper supplied from the rolls, and sewing the sheets of stacked glass fiber paper.

First claim

The invention claimed is:

1. A method of manufacturing a vacuum insulation, comprising:
fabricating an adhesive solution by inputting 1-20 parts by weight of a binder, 5-30 parts by weight of flame retardants, and 0.1-5 parts by weight of a coloring agent to 100 parts by weight of water contained in a water tank;
inputting glass fibers having a length of 20-100 mm to the adhesive solution;
removing moisture by supplying the glass fibers to a mesh belt, wherein the mesh belt moves left and right and front and rear so that the glass fibers are uniformly spread;
fabricating a glass fiber paper having a thickness of 0.5-2 mm by drying the glass fibers at 30-200° C.;
winding the glass fiber paper in a roll form; and
preparing the glass fiber paper rolls in multiple layers, stacking two or more glass fiber papers supplied from the rolls, and sewing the stacked glass fiber papers.

2. The method of claim 1 , wherein the binder comprises any one of acrylic resin series, PVA series, urethane resins, epoxy resins, phenol resins, a polyamides.

3. The method of claim 1 , wherein:
the glass fiber is fabricated by ejecting molten glass in a filament using bushing, and
the glass fiber has an average diameter of 7 μm or higher.

4. The method of claim 1 , wherein the coloring agent comprises one or more of dioxide titanium, oxide zinc, carbon powder, calcium, magnesium, cadmium, and chromium.

5. The method of claim 1 , wherein the flame retardants comprises one or more of halogen flame retardants, bromine flame retardants or phosphorous flame retardants, and inorganic flame retardants.

6. A method of manufacturing a vacuum insulation, comprising:
fabricating an adhesive solution by mixing 100 parts by weight of water, 1-20parts by weight of an acrylic resin binder, 5-30 parts by weight of flame retardants, and 0.1-5 parts by weight of a coloring agent in a water tank;
inputting glass fibers of 20 to 40 mm in length to the adhesive solution so that the glass fibers are coagulated together;
supplying the glass fibers to a mesh belt so that the glass fibers are uniformly spread in the mesh belt shaken front and rear and left and right;
fabricating a glass fiber paper having a thickness of 0.5 to 2 mm by drying the glass fibers on a top surface of the mesh belt in a dry temperature of 30 to 200° C. ; and
stacking two or more of said glass fiber papers and sewing the two or more stacked glass fiber papers.

Assignees

• Lg Hausys Ltd

Inventors

• Han Jung Pil
• Hwang Sung Seock
• Jeon Seung Min
• Min Byung Hoon

Classifications

• B32B27/08

  of synthetic resin · CPC title

• F16L59/04 Primary

  Arrangements using dry fillers, e.g. using slag wool · CPC title

• B32B5/26

  another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} · CPC title

• B32B2509/10

  Refrigerators or refrigerating equipment · CPC title

• B32B5/06

  characterised by a fibrous {or filamentary} layer {mechanically connected, e.g. by needling} to another layer, e.g. of fibres, of paper · CPC title