GB970127A - Improvements in nylon material - Google Patents

Improvements in nylon material

Info

Publication number
GB970127A
GB970127A GB22561D GB22561D GB970127A GB 970127 A GB970127 A GB 970127A GB 22561 D GB22561 D GB 22561D GB 22561 D GB22561 D GB 22561D GB 970127 A GB970127 A GB 970127A
Authority
GB
United Kingdom
Prior art keywords
sheet
rollers
spool
roller
strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB22561D
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MOLDINGS AND EXTRUSIONS Inc
Original Assignee
MOLDINGS AND EXTRUSIONS Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MOLDINGS AND EXTRUSIONS Inc filed Critical MOLDINGS AND EXTRUSIONS Inc
Publication of GB970127A publication Critical patent/GB970127A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/18—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets by squeezing between surfaces, e.g. rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0011—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping plates or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

970,127. Producing nylon sheeting. MOLDINGS & EXTRUSIONS Inc. Jan. 3, 1961 [Jan. 4, 1960], No. 225/61. Heading B5A. A method of improving the mechanical properties of nylon strip or sheet comprises applying to the strip or sheet a compressive force to elongate it in a direction transverse to that of the compressive force, e.g. by passage between smooth steel rollers 44, 46, Fig. 3, the strip or sheet being permanently elongated at least 5% more than the maximum elongation obtainable by stretching. Nylon is extruded from a die 14 to form a puddle on a roller 24, and the formed sheet is passed from a roller 26 round a cooling roller (not shown) on to a collecting spool. When the spool is full it is moved to a stand 36, Fig. 3, and the sheet 28 is fed round heating rollers 42, 40, e.g. at 275‹ to 325‹ F. to the rollers 44, 46, which produce a sheet 28a of reduced thickness. The width of the sheet remains effectively unchanged due to the grip of the rollers, but the edges are stretched slightly laterally and are trimmed to avoid unevenness. The sheet 28a is then passed round water-cooled rollers 48, 50, e.g. at 70‹ to 80‹ F. and is drawn from the machine by a pair of rubber-covered rollers 54, 52, driven by a motor (not shown) which provides a tension of 500 to 1000 lb. in the sheet 28a. The sheet is finally wound on a spool 56, driven so as to keep the sheet 28a suspended above the floor with a small droop. If the axes of the rollers 44, 46 are not exactly parallel, then the sheet 28a will dip to one side between the roller 52 and the spool 56, as shown in Fig. 3, so that the rollers 44, 46 can be quickly adjusted. The sheet 28a may be passed between the rollers 44, 46 several times to produce a final elongation of about 270%.
GB22561D 1960-01-04 1961-01-03 Improvements in nylon material Expired GB970127A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15360A 1960-01-04 1960-01-04

Publications (1)

Publication Number Publication Date
GB970127A true GB970127A (en) 1964-09-16

Family

ID=30769005

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22561D Expired GB970127A (en) 1960-01-04 1961-01-03 Improvements in nylon material

Country Status (1)

Country Link
GB (1) GB970127A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1704815B1 (en) * 1966-02-21 1974-02-07 Moldex Inc PROCESS FOR PRODUCING STRIPS OR LAYERS FROM NYLON FOR THE CONSTRUCTION OF DRIVE BELTS OR DGL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1704815B1 (en) * 1966-02-21 1974-02-07 Moldex Inc PROCESS FOR PRODUCING STRIPS OR LAYERS FROM NYLON FOR THE CONSTRUCTION OF DRIVE BELTS OR DGL

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