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Length & Widthwise Lines

This report was done for a carpet mill and found a defect in manufacturing.

THE CLAIM STATISTICS

INSPECTOR WAS CONTACTED ON: 11/14/97

INSPECTOR WAS RETAINED ON: 11/14/97

DATE INSPECTED: 11/17/97

DATE WRITTEN: 11/21/97

PROBLEM REPORTED: Corn Rowing

PROBLEM FOUND: Lines

WAS A DIAGRAM MADE: No

SAMPLES FROM INSPECTION: None Taken

PERSONS PRESENT: Inspector & Claimant

 

THE CARPET

MANUFACTURER: Tuftex Industries

STYLE NAME & NUMBER: Camberra

COLOR NAME & NUMBER: Soft Buck

NUMBER on BACKING: Not Applicable

FIBER/ ID METHOD: Nylon-Chemical

FIBER HUE: Tan

CONSTRUCTION: Tufted Loop

YARN STYLE: Sisal Loop

SQUARE YARDAGE: Not Given

BACK SYSTEM: Action Back

PRIMARY BACKING: Polypropylene

SECONDARY BACKING: Polypropylene

 

THE INSTALLATION

LOCATION TYPE: Residential

DATE INSTALLED:

METHOD: Stretch-In

CUSHION: 1/2-Inch Rebond

SUBFLOOR: Concrete

AREA INSTALLED: Familyroom, Hallway, and Two Bedrooms

 

USE & MAINTENANCE INFORMATION AT THE TIME OF INSPECTION

LITERATURE RECEIVED WITH PURCHASE: Not Determined

TEMPERATURE: 66.7°F - 19.2° C RH 51%

ADULTS: 3 - CHILDREN: 0 - PET(S): 1 - Dog

DO THEY SMOKE? No

SPOTTING AGENTS: None Reported

VACUUM/FREQUENCY: Upright Professional Service

ENTRY-MATS? Yes

SOIL: None Noticed

HEATING TYPE: Radiant From Floor

COOLING TYPE: None

CLEANING: Never Been Cleaned

 

REASON FOR COMMISSION

The carpet reportedly had a problem with cornrowing.

 

THE REPORT

Site Conditions and Geographical Information

The carpet was installed in the claimant's free standing single story house, located in a residential neighborhood in the Hollywood Hills. The house was well maintained and was owner occupied at the time of the inspection.

 

BACKGROUND INFORMATION MADE TO THE INSPECTOR

A problem with a noticeable line was noticed the morning after the carpet was installed. Later other lines were noticed throughout the installation. The visibility of the lines had not changed since they were first noticed and no corrections had been attempted.

 

DESCRIPTION OF PROBLEM AREA BY THIS INSPECTOR

A line running in the direction of manufacturing was noticed upon entering the hall. This line was most noticeable when viewed directly over head and was confined to only one 'high' stitch-row of the pile. This row appeared to be fatter or had less twist than the adjacent rows.

In the family-room a widthwise line was noticed 20.5 inches from the wall. In this line loops in the 'low row' were slightly pulled. In this room was another line running in the direction of manufacturing, similar to the one in the hallway.

In the back bedroom, another fat row running in the direction of manufacturing was noted.

 

ON-LOCATION FIELD TESTING

An inspection lamp was used for closer evaluation and to create shadows, but a shadow could not be made from the line indicating that it was lower than the surrounding pile.

A Pile Direction Test was done using a piece of paper and a pencil, but the pile direction was not discernible with this test.

 

THE ISSUE

The question that I have been asked to address is what has caused the carpet to develop lines.

 

GUIDELINES FOR EVALUATING THE ISSUE

Lines Can Be Caused From

  1. manufacturer’s defects from
    • Oil contamination
    • Dye
    • Defective yarn
      • From size
      • Improper twist
      • tension variations on the beam
  1. elongated soil patterns remaining in the carpet following cleaning
  2. lines or ridges of uneven floor finish in rows
  3. installation errors
    • stretching
    • improper bending or fold marks
    • when cushion seams separate, such as when there is not duct tape covering the seam

 

INDUSTRY STANDARDS & DEFINITIONS

The rules, standards, and or guidelines for each of these processes are available upon request.

 

THE INSPECTOR'S ANALYSIS

Roll crushing and installation errors generally create a wider line than this one and normally do not have pulled loops. Since all but one of these lines follows the direction of manufacturing and individual stitch row, they are inherent in manufacturing. Since they do no make shadows and the yarn appears to be fatter, the problem is likely from improper twist or some variation of that problem.

The width wise line was likely some type of momentary variation in the tension.

  • The lengthwise lines in the carpet in question were due to improper twist inherent in manufacturing based upon the observations made at the time of inspection.
  • The widthwise line in the carpet in question was due to momentary tension variations inherent in manufacturing based upon observations made at the time of the inspection.