GB1363161A – Pencils
– Google Patents
GB1363161A – Pencils
– Google Patents
Pencils
Info
Publication number
GB1363161A
GB1363161A
GB377872A
GB377872A
GB1363161A
GB 1363161 A
GB1363161 A
GB 1363161A
GB 377872 A
GB377872 A
GB 377872A
GB 377872 A
GB377872 A
GB 377872A
GB 1363161 A
GB1363161 A
GB 1363161A
Authority
GB
United Kingdom
Prior art keywords
polystyrene
jan
weight
parts
composition
Prior art date
1971-01-26
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
GB377872A
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.)
Teijin Ltd
Original Assignee
Teijin Ltd
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.)
1971-01-26
Filing date
1972-01-26
Publication date
1974-08-14
1971-01-26
Priority claimed from JP252271A
external-priority
patent/JPS5221022B1/ja
1971-01-28
Priority claimed from JP294771A
external-priority
patent/JPS5327645B1/ja
1972-01-26
Application filed by Teijin Ltd
filed
Critical
Teijin Ltd
1974-08-14
Publication of GB1363161A
publication
Critical
patent/GB1363161A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
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
B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
B29C44/322—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables
B—PERFORMING OPERATIONS; TRANSPORTING
B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
B43K—IMPLEMENTS FOR WRITING OR DRAWING
B43K19/00—Non-propelling pencils; Styles; Crayons; Chalks
B43K19/14—Sheathings
Abstract
1363161 Polystyrene/polyethylene/glass fibre compositions TEIJIN Ltd 26 Jan 1972 [26 Jan 1971 28 Jan 1971] 3778/72 Headings C3P and C3C [Also in Divisions B4-B5 and B6] A composition suitable for making pencil casings (see Division B6) comprises 100 parts by weight of a polystyrene, 10-40 parts by weight of polyethylene, 10-55 parts by weight of glass fibres, and a blowing agent. The polystyrene may be a homopolystyrene or a high impact polystyrene such as butadiene rubber modified or styrene-butadiene modified polystyrene. The composition may be in the form of a physical mixture of the three components or pellets obtained by blending the components, extruding and chopping into pellets. The blowing agent is preferably azodicarbonamide. High- or low-density polyethylene may be used. The composition may also contain pigments and/or fillers.
GB377872A
1971-01-26
1972-01-26
Pencils
Expired
GB1363161A
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
JP252271A
JPS5221022B1
(en)
1971-01-26
1971-01-26
JP294771A
JPS5327645B1
(en)
1971-01-28
1971-01-28
Publications (1)
Publication Number
Publication Date
GB1363161A
true
GB1363161A
(en)
1974-08-14
Family
ID=26335915
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB377872A
Expired
GB1363161A
(en)
1971-01-26
1972-01-26
Pencils
Country Status (5)
Country
Link
DE
(1)
DE2203635C3
(en)
FR
(1)
FR2123442B1
(en)
GB
(1)
GB1363161A
(en)
HK
(1)
HK48076A
(en)
IT
(1)
IT946950B
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP2746017A4
(en)
*
2011-08-15
2015-12-16
Ebras Com De Lápis Ltda
Formulation for producing a writing article, process for manufacturing a writing article and a writing article
US9946367B2
(en)
2012-05-29
2018-04-17
Staedtler Mars Gmbh & Co. Kg
Input device for touch-sensitive capacitive displays
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US5531947A
(en)
*
1992-09-15
1996-07-02
Bellaform Extrusionstechnik Gmbh
Process and installation for the manufacture of pencils
1972
1972-01-26
IT
IT1984572A
patent/IT946950B/en
active
1972-01-26
GB
GB377872A
patent/GB1363161A/en
not_active
Expired
1972-01-26
DE
DE19722203635
patent/DE2203635C3/en
not_active
Expired
1972-01-26
FR
FR7202595A
patent/FR2123442B1/fr
not_active
Expired
1976
1976-07-29
HK
HK48076A
patent/HK48076A/en
unknown
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP2746017A4
(en)
*
2011-08-15
2015-12-16
Ebras Com De Lápis Ltda
Formulation for producing a writing article, process for manufacturing a writing article and a writing article
US9946367B2
(en)
2012-05-29
2018-04-17
Staedtler Mars Gmbh & Co. Kg
Input device for touch-sensitive capacitive displays
Also Published As
Publication number
Publication date
DE2203635A1
(en)
1972-10-05
FR2123442B1
(en)
1974-06-28
IT946950B
(en)
1973-05-21
FR2123442A1
(en)
1972-09-08
DE2203635C3
(en)
1975-07-24
DE2203635B2
(en)
1974-12-12
HK48076A
(en)
1976-08-06
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Legal Events
Date
Code
Title
Description
1974-12-27
PS
Patent sealed
1991-09-25
PCNP
Patent ceased through non-payment of renewal fee
