PATENT CLAIM ANALYSIS

Application Number: 15741543
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["428", "137000"]

Abstract:
A cavity-containing polyester film is disclosed, including a layer (layer A) which has therein cavities, and layers (layers B) which each include a polyester resin containing inorganic particles and which are laminated, respectively, over both surfaces of the layer A. The layer A includes a composition including a polyester resin and a polypropylene resin. The polypropylene resin satisfies requirements of: (1) the melt flow rate (MFR) ranges from 1.0 to 10 g/10-minutes (at a temperature of 230° C. under a load of 2.16 kg); (2) the deflection temperature is 85° C. or higher under load (at a bending stress of 0.45 MPa); and (3) the weight-average molecular weight Mw ranges from 200,000 to 450,000 (measured by gel permeation chromatography (GPC)); and the molecular weight distribution ranges from 2 to 6 (being represented as the ratio of the weight-average molecular weight Mw to the number-average molecular weight Mn of the polypropylene resin (Mw/Mn)).

Claim (Index 6):
A method for producing a cavity-containing polyester film having an apparent density ranging from 0.8 to 1.2 g/cm 3 , comprising the step of: melt-extruding a laminate into a sheet form, this laminate being a laminate comprising a layer (layer A) which comprises a composition comprising a polyester resin and a polypropylene resin satisfying all of the following requirements (4) to (6), and layers (layers B) which each comprise a polyester resin containing inorganic particles and which are laminated, respectively, over both surfaces of the layer A:\n (4) the polypropylene resin having a melt flow rate (MFR) ranging from 1.0 to 10 g/10-minutes (at a temperature of 230\u00b0 C. under a load of 2.16 kg), (5) the polypropylene resin showing a deflection temperature of 85\u00b0 C. or higher under load (at a bending stress of 0.45 MPa), and (6) the polypropylene resin having a weight-average molecular weight Mw ranging from 200000 to 450000, this weight-average molecular weight being measured by gel permeation chromatography (GPC), and having a molecular weight distribution ranging from 2 to 6, this molecular weight distribution being represented as the ratio of the weight-average molecular weight Mw to the number-average molecular weight Mn of the polypropylene resin (Mw/Mn); and next drawing the sheet into at least one axial direction of the sheet to incorporate cavities into the layer A.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 86.0
- Lexical Diversity: 2.03261
- Patent Class: 428.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14512574', '10589431', '13336522', '14302449', '13637917']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8877466079989755
- 35 USC 102 Novelty (BERT): 0.4833920674185775
- Combined Prediction Score: 0.8473111539409358
- Mean Citation Score: 172.430032
- Max Citation Score: 180.32033
- Similarity Product: 122.59883409882784

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test